Question

What is the measure of angle BCD?
m∠BCD =___ degrees

Answer 1

we know that

the sum of the measures of the exterior angles of a polygon is always $360\°$

so

Find the external angle in C

$external\ angle (C)=360\°-(149\°+25\°+146\°)=40\°$

$external\ angle (C)+internal\ angle (BCD)=180\°$ -----> by supplementary angles

$internal\ angle (BCD)=180\°-external\ angle (C)$

$internal\ angle (BCD)=180\°-40\°$

$internal\ angle (BCD)=140\°$

therefore

the answer is

$angle (BCD)=140\°$

Answer 2

Answer:

140º

Step-by-step explanation:

Got right on test